diff --git a/src/binary.cpp b/src/binary.cpp
index a7e5130..e4e3da4 100644
--- a/src/binary.cpp
+++ b/src/binary.cpp
@@ -72,19 +72,21 @@ std::vector<unsigned char> DecodeBase64(const std::string &input) {
   unsigned char *out = &ret[0];
 
   unsigned value = 0;
-  for (std::size_t i = 0; i < input.size(); i++) {
+  for (std::size_t i = 0, cnt = 0; i < input.size(); i++) {
+    if (input[i] == '\n' || input[i] == '\r') continue; // skip newlines
     unsigned char d = decoding[static_cast<unsigned>(input[i])];
     if (d == 255)
       return ret_type();
 
     value = (value << 6) | d;
-    if (i % 4 == 3) {
+    if (cnt % 4 == 3) {
       *out++ = value >> 16;
       if (i > 0 && input[i - 1] != '=')
         *out++ = value >> 8;
       if (input[i] != '=')
         *out++ = value;
     }
+    ++cnt;
   }
 
   ret.resize(out - &ret[0]);